资料来源 : pyDict

水闸

资料来源 : Webster's Revised Unabridged Dictionary (1913)

Milldam \Mill"dam`\, n.
   A dam or mound to obstruct a water course, and raise the
   water to a height sufficient to turn a mill wheel.

资料来源 : WordNet®

milldam
     n : dam to make a millpond to provide power for a water mill